壳寡糖对荷瘤鼠免疫功能的影响

目的 通过建立H22肝癌荷瘤鼠作为实验动物模型,研究壳寡糖对荷瘤鼠免疫功能的影响.方法 选择小鼠体内注射的方法将不同浓度壳寡糖注入荷瘤小鼠体内,观察肿瘤生长情况,对其进行免疫功能的测定.结果 壳寡糖可提高荷瘤小鼠血清的IL-2和INF-r含量,增加荷瘤小鼠免疫器官脾脏和胸腺重量.结论 壳寡糖可抑制肿瘤生长,提高机体免疫功能.     

壳寡糖对肿瘤抑制作用实验研究

目的观察壳寡糖对肿瘤抑制作用的影响。方法采用体内注射的方法将壳寡糖注入荷瘤小鼠腹腔及瘤内,观察肿瘤生长情况及MTT比色法观察壳寡糖对肿瘤细胞的体外作用。结果壳寡糖对荷瘤小鼠肿瘤的生长有抑制作用,显微镜观察显示肿瘤组织出现坏死;壳寡糖对肿瘤细胞生长有抑制作用,其抑瘤率与浓度有关,与时间无关,细胞经壳寡糖作用后,透射电镜显示细胞有凋亡趋势。结论壳寡糖可抑制肿瘤生长,同时壳寡糖可能诱导肿瘤细胞凋亡。     

壳寡糖对荷瘤鼠IL-2、TGF-β的影响

目的 观察壳寡糖对荷瘤鼠免疫功能的影响.方法 分组给药10d后,处死小鼠测定胸腺指数、脾指数及抑瘤率:采用ELISA法测定L-2、TGF-β.结果 壳寡糖使荷瘤鼠的胸腺指数和脾指数都增加,能提高IL-2和降低TGF-β分泌.结论 壳寡糖可以通过调节IL-2、TGF-β细胞因子分泌的作用调节荷瘤鼠的免疫功能.     

双歧异黄酮奶粉对化疗后荷瘤小鼠免疫功能的影响

目的研究双歧异黄酮奶粉对化疗后荷瘤小鼠免疫功能的影响。方法以S_(180)荷瘤C_(57)BL/6小鼠为模型,系统地研究双歧异黄酮奶粉对瘤重和脾细胞功能的影响。结果双歧异黄酮奶粉对荷瘤鼠化疗所引起的免疫功能低下具有明显的恢复作用,可显著提高化疗荷瘤鼠T细胞转化能力,明显促进化疗荷瘤鼠白介素-2(IL-2)分泌水平。结论双歧异黄酮奶粉能够拮抗肿瘤抗原和化疗所引起的免疫抑制。     

双歧异黄酮奶粉对化疗后荷瘤小鼠免疫功能的影响

目的 研究双歧异黄酮奶粉对化疗后荷瘤小鼠免疫功能的影响。方法 以S180荷瘤C57BL／6小鼠为模型，系统地研究双歧异黄酮奶粉对瘤重和脾细胞功能的影响。结果 双歧异黄酮奶粉对荷瘤鼠化疗所引起的免疫功能低下具有明显的恢复作用，可显著提高化疗荷瘤鼠T细胞转化能力，明显促进化疗荷瘤鼠白介素-2(IL-2)分泌水平。结论 双歧异黄酮奶粉能够拮抗肿瘤抗原和化疗所引起的免疫抑制。     

化合物LJZ对小鼠移植瘤生长和荷瘤小鼠免疫功能的影响

目的研究化合物LJZ的体内抗肿瘤活性和对荷瘤小鼠免疫功能的影响．方法以小鼠移植性肉瘤S180和小鼠移植性肝癌H22为模型，研究化合物LJZ对肿瘤生长的影响；采用DNFB诱导荷瘤鼠迟发型超敏性反应（DTH）反应，检测化合物LJZ对荷瘤小鼠特异性免疫功能的影响；采用荷瘤小鼠腹腔巨噬细胞吞噬中性红试验，检测化合物LJZ对荷瘤小鼠非特异性免疫功能的影响．结果化合物LJZ对小鼠移植性肉瘤S180和肝癌H22的生长均有一定的抑制作用，呈现明显的量效关系．化合物LJZ能明显增强荷肉瘤S180小鼠巨噬细胞的吞噬功能，但对DTH无明显影响．结论化合物LJZ具有一定的抗肿瘤作用，并与其增强荷瘤小鼠非特异性免疫功能有关．     

桦树皮提取物抗肿瘤作用实验研究

目的　探讨桦树皮的抗肿瘤作用和对荷瘤小鼠免疫功能的影响。方法　应用桦树皮提取物（ＥＢＢ）口服,观察体内对小鼠不同肿瘤的抑制作用。结果　ＥＢＢ可抑制小鼠Ｓ１８０肉瘤、Ｂ１６ 黑色素瘤和Ｌｅｗ ｉｓ 肺癌的生长,使瘤重量减轻,存在剂量效应关系。ＥＢＢ可使荷瘤小鼠胸腺指数脾指数增大。结论　桦树皮具有抑制肿瘤的生长、增强机体的免疫功能作用。     

Ge—132抗肿瘤作用及其免疫学机制的研究

目的　研究 Ｇｅ － １３２ 对荷瘤小鼠的抑瘤作用及其免疫学机制。方法　以荷瘤小鼠为模型,腹腔连续注射 Ｇｅ － １３２（１００ ｍｇ／ｋｇ·ｄ 、３００ ｍ ｇ／ｋｇ·ｄ）１４ｄ ,观察肿瘤生长及对免疫功能的影响。结果　体内注射 Ｇｅ － １３２ 能显著抑制荷瘤小鼠 Ｓ１８０ 肉瘤的生长,抑瘤率达５５ ％ 。 Ｇｅ － １３２ 对荷瘤小鼠受抑的细胞免疫功能具有明显正向调节作用,能提高 Ｔ 淋巴细胞增殖及 Ｉ Ｌ－ ２ 产生能力,增强 Ｎ Ｋ 和 Ｌ Ａ Ｋ 细胞活性。结论　 Ｇｅ － １３２ 能明显抑制肿瘤的生长,这种抗肿瘤效应是通过对免疫功能的正向调节作用实现的。     

双歧杆菌细胞壁与富锗灵芝的协同抑瘤作用

目的：双歧杆菌细胞壁与富锗灵芝联合应用于荷瘤动物体内，观察抑瘤效果。方法：将纯系小鼠随机分４ 组，建立 Ｓ１８０ 实体瘤模型后，分别用双歧杆菌细胞壁及双歧杆菌细胞壁加富锗灵芝进行治疗。结果：检测巨噬细胞活性及干扰素活性均有明显的升高。结论：双歧杆菌细胞壁加富锗灵芝比单独应用双歧杆菌细胞壁对机体的免疫促进作用更为明显。     

血府逐瘀汤抗肿瘤作用的实验研究

目的：为临床应用血府逐瘀汤治疗肿瘤提供理论依据。方法：本文从IL-2、TNF-α等细胞因子水平变化,探讨了桂枝茯苓丸对荷瘤小鼠异常免疫功能状态的免疫调节作用。结果：血府逐瘀汤抑瘤率达41.95%,能延长荷瘤小鼠生存期,生命延长率为42.3%;血府逐瘀汤促进免疫功能低下的荷瘤机体的IL-2、TNF-α分泌,提高了荷瘤小鼠低下的细胞免疫功能。结论：血府逐瘀汤能延长荷瘤小鼠生存期,具有抑制肿瘤生长作用;具有提高荷瘤机体免疫功能的作用。     

Value of D-Dimers in patients with acute aortic dissection

Objective: To evaluatel the value of D-dimers in patients with acute aortic dissection (AAD). Methods: This study consisted of 16 patients with AAD and 27 non-AAD patients. Serum D-dimets were measured by Sta-Liatest D-DI immunoturbidimetric assay. Results: D-dimer level was higher (P ＜ 0.001) in patients with AAD(7.91 ± 5.52 μg/ml) than that in non- AAD group(1.57±1.24 μg/ml). D-dimer was positive (＞0.4 μg/ml) in all patients with AAD and in 10 control group patients (37%). Among patients with acute AAD, D-dimers tended to be higher in Stanford A than in Stanford B (8.67 ± 4.31 μg/ml vs. 3.24±1.27 μg/ml, P ＜0.01). D-dimer values tended to be higher in more extended disease(3.84 ± 1.65 μg/ml, 8.57 ± 3.58 μg/ml and 11.87 ± 5.69 μg/ml in thoracic aorta, thoracic and abdominal aorta, thoracic and abdominal aorta and iliacal arteries, respectively, P ＜ 0.05 for both 8.57 ± 3.58 and 11.87 ± 5.69 vs. 3.84 ± 1.65 ). Including the control group into the analysis, we found a sensitivity of 100%, a negative predictive value of 100%, and a specificity of 66% and a positive predictive value of 64% for D-dimer in diagnosis of AAD in our patients with suspected AAD. Conclusion: D-dimer was elevated in patients with AAD. A negative D-dimer test result could be useful in excluding AAD.     

Research of combined liver-kidney transplantation model in rats

Objective： To set up a simple and reliable rat model of combined liver-kidney transplantation. Methods： SD rats served as both donors and recipients. 4℃ sodium lactate Ringer＇s was infused from portal veins to donated livers,and from abdominal aorta to donated kidneys, respectively. Anastomosis of the portal vein and the inferior vena cava （IVC） inferior to the right kidney between the graft and the recipient was performed by a double cuff method, then the superior hepatic vena cava with suture. A patch of donated renal artery was anastomosed to the recipient abdominal aorta. The urethra and bile duct were reconstructed with a simple inside bracket. Results： Among 65 cases of combined liver-kidney transplantation, the success rate in the late 40 cases was 77.5%. The function of the grafted liver and kidney remained normal. Conclusion： This rat model of combined liver-kidney transplantation can be established in common laboratory conditions with high success rate and meet the needs of renal transplantation experiment.     

BLOOD PRESSURE CHANGE WITH AGE IN SALT-SENSITIVE TEENAGERS

Objective To observe blood pressure change with age in salt-sensitive teenagers whose salt sensitivity were determined by repeated testing.Methods Salt sensitivity was determined through intravenous infusion of normal saline combined with volume-depletion by oral diuretic furosemide in 55 teenagers. After five years, salt sensitivity was re-examined and subject blood pressure was followed up. Blood pressure changes in salt-sensitive teenagers were compared to that of non-salt sensitive teenagers over five years.Results After 5 years, the repetition rate of salt sensitivity determined by intravenous saline loading is 92.7%. In teenagers with salt sensitivity on the baseline, both the systolic blood pressure increments and increment rates were much higher than non-salt sensitive teenagers (12.7±12.1 mmHg vs. 2.8±5.2 mmHg, P＜ 0.01; 12.2%± 12.0% vs. 2.5% ±4.4%, P＜ 0.001,respectively). There was a similar trend for diastolic blood pressure (8.4 ± 6.4 mmHg vs. 3.7 ± 6.4 mmHg, P = 0.052; 13.2% ±10.6 % vs. 6.8%± 10.1%, P = 0.053, respectively).Conclusions Salt sensitivity determined by intravenous saline loading showed good reproducibility. Blood pressure increments with age were much higher in salt-sensitive teenagers than non-salt sensitive teenagers, especially in terms of systolic blood pressure.     

安心颗粒对急诊经皮冠状动脉介入术后生活质量影响的研究

目的：评价使用安心颗粒对急诊经皮冠状动脉介入术（PPCI）术后生活质量的影响.方法：将160例接受PPCI的急性ST段抬高型心肌梗死患者随机分为安心颗粒组（术前顿服安心颗粒8.8g,术后安心颗粒4.4 g/次,每日2次）和对照组（仅接受基础药物治疗）.所有患者均服用阿司匹林、氯吡格雷和阿托伐他汀.分别在入院时、出院前1d、出院后180 d时,应用心肌梗死多维度量表（MIDAS）、中文版SF-36评价量表对患者生活质量评分.并观察术后30 d以内的出血并发症、血小板减少症发生情况.结果：入院时和出院前1d,两组患者的心肌梗死MIDAS、SF-36量表评分比较无差异（P＞0.05）;出院后180 d时,与对照组比较,安心颗粒组MIDAS、SF-36评分明显减低（P＜0.05）;组内与入院时比较,两组出院前1d、出院后180 d时,MIDAS、SF-36评分均降低（P＜0.05）.两组患者在随访期间均无大量出血、少量出血、重度和极重度血小板减少症发生,安心颗粒组有4例、对照组有7例发生不明显出血（P＞0.05）.两组发生轻度血小板减少症的患者数比较无差异（P＞0.05）.结论：PPCI使用安心颗粒,能改善急性ST段抬高型心肌梗死患者的生活质量,且不增加出血风险.     

The comparative studies of the influences of Urapidil and Nicardipine on sino-atrial node function, atrio-ventricular node function and hemodynamics

Objective:To investigate the influences of urapidil and nicardipine on rabbit sinus function,atrio-ventricular node function and hemodynamics.Methods:Thirty-two Angora's rabbits were selected and randomly divided into four groups.U1 group:urapidil 0.25 mg/kg;U2 group:urapidil 0.5 mg/kg;N1 group:nicardipine 10 μg/kg;N2 group:nicardipine 20 μg/kg.All these medicine were administrated within 30 seconds.Measurements were taken before and after the administration of urapidil or nicardipine for the following data:mean blood pressure(MAP),heart rate(HR),sino-atrial conduction time(SACT),maximal sinoatrial recovery time(SNRTmax)corrected sinus node recovery time(CSNRT),index of sinus node recovery time(SNRTI),Wenckebach A-V conduction frequency (WB),and P-R interval.Results:Significant MAP and HR changes were identified in all of the four groups before and after administration of both urapidil and nicardipine.No significant changes could be found in the rest of the parameters.Intergroup analysis showed that SACT and CSNRT of N1 and N2 groups were shorter than those of the U2 group(P＜0.01);the MAP decreased(P＜0.01)and the HR increased drastically(P＜0.01).Conclusions:Neither urapidil(0.25 mg/kg,0.5 mg/kg)nor nicardipine(10μg/kg,20μg/kg)has any significant influence on rabbit sinus function or rabbit atrio-ventricular node function.Nicardipine could be a better choice than urapidil for parafunctional sinus node patients.     

Expression of OPGmRNA and ODFmRNA in the patients of hip fracture due to osteoporosis

Objective：To investigate the gene expression of osteoprotegerin（OPG） and osteoclast differentiation factor（ODF） in the bone tissue of patients with hip fracture due to osteoporosis. Methods：OPGmRNA and ODFmRNA in the bone tissue in 50 cases of osteoporosis sufferers（over 50 years old） with hip fracture（Observer Group） and 30 cases of hip facture sufferers with no osteoporosis（Control group） were analyzed with the Semi-Quantitative RT-PCR method. Results：The mRNA expressed of ODF, OPG were both high in the patients with hip fracture. In the control group, the expression of OPG mRNA was observed, while the expression of ODF mRNA was very slight. Conclusion：Aged patients contained all signals including OPG, ODF that are essential for inducing osteoclastogenesis and promoting bone resorption.     

The clinicopathological and immuohistochemical analysis of solid-pseudopapillary tumor of the pancreas： report of 9 cases

Objective：To investigate the clinical features, pathological characteristics and immunophenotype of solid-pseudopapillary tumor of the pancreas（SPTP）. Methods：Nine surgically treated cases of SPTP were retrospectively reviewed. Hematoxylin and Eosin（HE） staining and immunohistochemical staining were used to analyze all cases, and the general clinical data was collected. Results：Six patients were asymptomatic except for a palpable mass. Two patients complained of vague-epigastric pain. One patient appeared jaundice. The tumor was encapsulated and solid tissues alternately with cystic tissues. Histologically, the histological structure of solid portion was pseudopapillary with a fibrovascular core. Tumor cells were uniform and medium-sized which were arranged in sheets ets or nests or pseudopapillary patterns. Immunohistochemical studies demonstrated that SPTP proved positive in vimentin（9/9 cases）, AAT（9/9 cases）, NSE（9/9 cases）, ACT（7/9 cases）, CK20（2/9 cases）, CgA（1/9 cases）, S-100（3/gcases）, PR（4/gcases）, Syn（3/9 cases） and CD56（5/9cases）, negative in CEA and ER. Conclusion：SPTP is a tumor predominantly occurring in young women frequently without special symptoms. This tumor has various characteristical histological patterns with different immunophenotype.     

Dynamic Changes in Serum Estradiol and Progesterone levels in Patients of Premenstrual Syndrome with Adverse Flow of Liver-qi

Objective:To probe into the influence of changes of ovarian hormones on the pathogenesis of the specific sub-type premenstrual syndrome(PMS)and reveal partial microcosmic mechanisms of adverse flow of liver-qi.Methods:Estradiol(E2)and progesterone(P)levels in serum were determined at different phases of menstrual cycle by radioimmunoassay.Results:In the group of PMS with adverse flow of liver-qi.the secretive peak value Of E2 and P at the follicular phase significantly decreased,and the secretive peak value at the luteal phase did not come into being.Conclusions:Low E2 and P secretive peak at the follicular phase and absence of secretive peak at the luteal phase is one of the microcosmic mechanisms of PMS with adverse flow of liver-qi.One of the pathophysiologic mechanisms of specific sub-type PMS is probably the continuous low level of E2and P.     

Real-time Three-dimensional Echocardiography in Assessment of Left Ventricular and Right Ventricular Volumes

Real-time three-dimensional echocardiography (RT3DE)is a new ultrasound technique that enables dynamic threedimensional visualization and quantification of the heart in real time. Investigation of feasibility and methodology of RT3DE in determining left ventricular (LV) and right ventricular (RV) volumes, RT3DE was performed in 35 normal adults using Philips SONOS 7500 system with a 2-4 MHz matrix array transducer. The 60°×60° "pyramid" volume database was obtained and analyzed on a TomTec echo workstation. Both LV and RV volumes were calculated with four 3DE methods (i.e. apical 2, 4, 8, and 16-plane) through manually tracing ventricular endocardial borders in end diastole and end systole. Stroke volumes were then calculated. LV volume was also measured by 2DE Simpson's rule using GE VIVID 7 ultrasound machine.     

SCREENING FOR A 21-CHROMOSOME ABNORMALITY IN PREIMPLANTED EMBRYOS OF ELDERLY WOMEN

Increasing maternal age is the only etiological factor unequivocally linked to Down's syndrome in humans. The occurrence rate of newborns with Down's syndrome is about 1/220 in women over 35 years old. However, the occurrence rate in embryos fertilized in vitro, of the elder woman is unclear. Using FISH we screened the number of chromosome 21 in preimplanted embryos of 5 elderly women (average age, 38.4 years) to study the feasibility and necessity of screening trisomy 21 in embryos in patients over 35 years old at the in vitro fertilization (IVF) center.